I'm having trouble with unit rates. . which of the following is a unit rate? a. $1.25/4 oz b. 120 miles/2 hours c. 4 feet/ 1 second d. 340 miles/6 gallons

Unit rate is when the rates are expressed as a quantity of 1

So answer is:

C. 4 feet/ 1 second

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl